CN214667027U

CN214667027U - AB symmetrical flowmeter with diffusion part

Info

Publication number: CN214667027U
Application number: CN202120832714.4U
Authority: CN
Inventors: 刘志凯; 刘立国; 李嵩; 王树娇; 董庆; 田正滨
Original assignee: LIAONING FOCUS TECHNOLOGY CO LTD
Current assignee: LIAONING FOCUS TECHNOLOGY CO LTD
Priority date: 2021-04-22
Filing date: 2021-04-22
Publication date: 2021-11-09
Anticipated expiration: 2031-04-22

Abstract

The utility model discloses a take AB symmetry flow meter of diffusion part, pipeline, throttle piece, gasket, bolt, nut, malleation side pressure tube, negative pressure side pressure tube and differential pressure transmitter behind pipeline, flowmeter front end way and the flowmeter, be equipped with throttle piece and gasket behind the pipeline before the flowmeter, pipeline and flowmeter behind the flowmeter pass through bolt and nut fixed connection in flange department before the flowmeter, be equipped with on the pipeline before the flowmeter and get the pressure mouth and utilize the pressure tube to be connected with differential pressure transmitter's malleation side, be equipped with on the pipeline behind the flowmeter and get the pressure mouth and utilize the pressure tube to be connected with differential pressure transmitter's negative pressure side. Compared with the prior art, the beneficial effects of the utility model are that: 1) the AB symmetrical flowmeter with the diffusion part can enable fluid to be quickly recovered after passing through the throttling element, and the recovery distance is less than 2 times of the pipe diameter distance, so that the requirement of the installed straight pipe section can be greatly reduced.

Description

AB symmetrical flowmeter with diffusion part

Technical Field

The utility model relates to a flow measurement field specifically is a take AB symmetry flowmeter of diffusion part.

Background

The differential pressure flowmeter measures according to the working principle that a certain relation exists between the pressure difference generated by a fluid medium flowing through a throttling device and the flow, and mainly comprises a pore plate, a nozzle, a venturi tube and the like. The measurement principle is based on two laws of energy conservation and mass conservation in a closed pipeline. The AB symmetrical flowmeter is more energy-saving than the traditional flowmeter, has higher precision, can measure the flow of liquid, steam and gas in a pipeline, is widely applied to the departments of petroleum, chemical industry, metallurgy, electric power, light industry and the like, and gradually occupies the market to obtain wide application.

The throttling device of the AB symmetrical flowmeter is a porous disc type, and the specific structural characteristic is that a plurality of holes are distributed on the disc. The measurement device is divided into a central hole and satellite holes surrounding the central hole, which are collectively called measurement holes. The size and the distribution of the measuring holes are customized based on a function model established after optimization of a large amount of experimental data, when fluid passes through the measuring holes of the disc, the measuring holes can generate a rectifier-like effect, the fluid is rectified, and the generation of vortexes is weakened.

Therefore, how to solve the above problems is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take AB symmetry flowmeter of diffusion part to solve the problem in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a take AB symmetry flow meter of diffusion part, pipeline, throttle spare, gasket, bolt, nut, malleation side pressure tube, negative pressure side pressure tube and differential pressure transmitter behind pipeline, flowmeter front end is equipped with throttle spare and gasket behind the pipeline and the flowmeter before the flowmeter, and pipeline and flowmeter back pipeline pass through bolt and nut fixed connection in flange department before the flowmeter, are equipped with before the flowmeter and get the pressure mouth on the pipeline, get pressure mouth department and be equipped with malleation side pressure tube, and malleation side pressure tube is connected with differential pressure transmitter's malleation side, is equipped with on the pipeline behind the flowmeter and gets the pressure mouth, gets pressure mouth department and is equipped with negative pressure side pressure tube, and negative pressure side pressure tube is connected with differential pressure transmitter's negative pressure side.

The rear pipeline of the flowmeter is provided with a diffusion part for guiding flow, the diffusion angle of the diffusion part is 5-12 degrees, and the diameter of the minimum section of the rear pipeline of the flowmeter does not shield the circulation hole of the throttling element.

The throttling element is provided with a central hole and the number of satellite holes surrounding the central hole is 6, and the diameter of each satellite hole is equivalent to that of the central hole.

Circular arcs are machined on the front edges of the central hole and the satellite hole in the throttling piece, and the radius of each circular arc is 0.05-0.2 times of the diameter of the satellite hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the AB symmetrical flowmeter with the diffusion part can enable fluid to be quickly recovered after passing through the throttling element, and the recovery distance is less than 2 times of the pipe diameter distance, so that the requirement of a straight pipe section for installation can be greatly reduced;

2) the vortex of the AB symmetrical flowmeter throttling element with the diffusion part is reduced, the permanent pressure loss of a pipeline can be reduced, and the energy consumption is saved;

3) the buffer type AB symmetrical flowmeter can control and stabilize the fluid state of the fluid, improve the repeatability and long-term stability of measurement and widen the measurement range ratio;

4) the front edge of the throttling element is arc-shaped, the long-term operation is stable, and the problem of accuracy reduction caused by abrasion is solved;

5) the flowmeter can be widely applied to the fields of petroleum, chemical industry, metallurgy, electric power, light industry and the like, and has the advantages of low requirements on front and rear straight pipe sections, small pressure loss, high measurement precision, wide range ratio and the like

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a diagram of the rear pipe structure of the flow meter;

FIG. 3 is a schematic view of a throttle member;

fig. 4 is a sectional view of the throttle member.

In the figure: 1. the flowmeter comprises a front pipeline 2, a rear pipeline 3, a throttling element 4, a gasket 5, a bolt 6, a nut 7, a positive pressure side pressure guiding pipe 8, a negative pressure side pressure guiding pipe 9, a differential pressure transmitter 10 and a diffusion part.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: an AB symmetrical flowmeter with a diffusion part comprises a front pipeline 1 of the flowmeter, a rear pipeline 2 of the flowmeter, a throttling piece 3, a gasket 4, a bolt 5, a nut 6, a positive pressure side pressure pipe 7, a negative pressure side pressure pipe 8 and a differential pressure transmitter 9, be equipped with throttle 3 and gasket 4 between pipeline 1 and the flowmeter pipeline 2 before the flowmeter, pipeline 1 and flowmeter pipeline 2 pass through bolt 5 and nut 6 fixed connection in flange department before the flowmeter, fasten with bolt 5 and nut 6, press from both sides throttle 3 tightly, prevent revealing, be equipped with on the flowmeter pipeline 1 and get the pressure mouth, it is equipped with malleation side pressure tube 7 to get pressure mouth department, malleation side pressure tube 7 is connected with differential pressure transmitter 9's malleation side, be equipped with on the flowmeter pipeline 2 behind the flowmeter and get the pressure mouth, it is equipped with negative pressure side pressure tube 8 to get pressure mouth department, negative pressure side pressure tube 8 is connected with differential pressure transmitter 9's negative pressure side.

Referring to fig. 2, a diffusion part 10 for guiding flow is processed on the rear pipeline 2 of the flow meter, the diffusion angle of the diffusion part 10 is 5-12 degrees, the diameter of the minimum section of the rear pipeline 2 of the flow meter is not required to shield the flow hole of the throttling element, and the diffusion part 10 is arranged on the rear pipeline 2 of the flow meter, so that the flow can be quickly recovered, and the resistance loss is reduced.

Referring to fig. 3 and 4, the orifice 3 is provided with a central hole and the number of satellite holes surrounding the central hole is 6, and the diameter of the satellite holes is equivalent to that of the central hole; arcs are processed on the front edges of the central hole and the satellite hole on the throttling element 3, and the radius of each arc is 0.05-0.2 times of the diameter of the satellite hole; the orifice 3 is regularly provided with a plurality of holes, and the front edges of the holes are chamfered for reducing pressure loss.

When the utility model is used, the utility model is arranged on a pipeline, the positive pressure side of the differential pressure transmitter 9 is connected with the positive pressure side pressure leading pipe 7, and the negative pressure side of the differential pressure transmitter 9 is connected with the negative pressure side pressure leading pipe 8; the differential pressure value signal obtained by the differential pressure transmitter 9 is calculated by the transmitter or the calculator to calculate the specific flow value, thereby completing the flow measurement.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a take AB symmetry flowmeter of diffuser portion which characterized in that: comprises a front pipeline (1) of the flowmeter, a rear pipeline (2) of the flowmeter, a throttling piece (3), a gasket (4), a bolt (5), a nut (6), a positive pressure side pressure pipe (7), a negative pressure side pressure pipe (8) and a differential pressure transmitter (9), be equipped with throttle spare (3) and gasket (4) between pipeline (2) behind flowmeter front pipeline (1) and the flowmeter, pipeline (2) are through bolt (5) and nut (6) fixed connection in flange department behind flowmeter front pipeline (1) and the flowmeter, be equipped with on pipeline (1) before the flowmeter and get the pressure mouth, it is equipped with malleation side and draws and press pipe (7) to get pressure mouth department, malleation side draws and presses pipe (7) to be connected with differential pressure transmitter's (9) malleation side, be equipped with on pipeline (2) behind the flowmeter and get the pressure mouth, it is equipped with negative pressure side and draws and press pipe (8) to get pressure mouth department, negative pressure side draws and presses pipe (8) to be connected with differential pressure transmitter's (9) negative pressure side.

2. The AB symmetric flowmeter with a diffuser section according to claim 1, wherein: the rear pipeline (2) of the flowmeter is provided with a diffusion part for guiding flow, the diffusion angle of the diffusion part is 5-12 degrees, and the diameter of the minimum section of the rear pipeline (2) of the flowmeter should not shield the flow hole of the throttling element.

3. The AB symmetric flowmeter with a diffuser section according to claim 1, wherein: the throttling element (3) is provided with a central hole and the number of satellite holes surrounding the central hole is 6, and the diameter of the satellite holes is equivalent to that of the central hole.

4. The AB symmetric flowmeter with a diffuser section according to claim 1, wherein: circular arcs are processed on the front edges of the central hole and the satellite hole in the throttling piece (3), and the radius of each circular arc is 0.05-0.2 times of the diameter of the satellite hole.